Improvement in machines for sawing stone



v 2 Sheets-Sheet; 1. G. JENNINGS & J. L. ROBELLAZ.

Machine for Sawing Stone.

WITJV'E SES UV'VEJV'TORS W g I J? y a? (W flttorneys 2 Sheets-Sheet 2.

G. JENNINGS 86 J. L. ROBELLAZ. Machine for Sawing Stone.

No. 204,331- Patented May 28,1878.

7W KWESSE? UNI'I'ED STATES PATENT OEEIcE GEORGE JENNINGS AND JOHN L.ROBELLAZ, OF NEW ALBANY, INDIANA.

IMPROVEMENT IN MACHINES FOR SAW-ING STONE.

Specification forming part of Letters Patent No. 204,331, dated May 28,I878; application filed April 8, 1878.

To all whom it may concern:

Be it known that we, GEORGE JENNnvcs and JOHN L. ROBELLAZ, of NewAlbany, in the county of Floyd and State of Indiana, have inventedcertain new and useful Improvements in Sawing Stone; and do herebydeclare that the following is a full, clear, and exact descriptionthereof, reference being had to the accompanying drawings, and to theletters of reference marked thereon, making a part of thisspecification.

The nature of our invention consists in the construction and arrangementof a machine for sawing stone and marble, as will be hereinafter morefully set forth.

In order to enable others skilled in the art to which our inventionappertains to make and use the same, we will now proceed to describe itsconstruction and operation, referring to the annexed drawings, in which-Figure 1 is a plan view of our machine. Fig. 2 is a side elevation, andFig. 3 an end View, thereof. Figs. 4, 5, and 6 are detailed views ofparts of the machine.

A represents the bed of the machine, at each end of which are twostandards, B B, and on the inner sides of these standards are placed twolongitudinal side bars, 0 0, containing between them a slide-frame, D D.The end pieces D D of this frame have at their ends plates or lugs a a,at top and bottom, fitting over the top and bottom edges of the sidebars 0 O, to hold the parts together. The side bars 0 C have at theirends, on the outer sides, lugs or flanges b b, to bear against thestandards B B and form guides for the vertical movement thereof.

The side bars 0 O are, at their ends, by means of chains or cords d d,connected with a single chain or cord, e, on a derrick, E, erected atthe side of the machine for hoisting the frame. To the other end of thechain or cord 6 are attached suitable weights G. This device acts as afeeder of the saw-frame, for the purpose of placing more or less weighton the saws, as the occasion or circumstances may require.

The frame D D is moved back and forth by means of pitmen M M from acrank-shaft, N, which may be run by steam, horse, water, or

any other suitable power. In the centers, to the end pieces D D, isattached the middle saw F by means of a U-shaped clamp, H, at each end.The center of this clamp is slotted, and the end of the saw insertedthrough the slot and held by a pin, f. Nuts h h are then screwed uponthe ends of the clamp to tighten the saw.

The heads or end pieces D D of the sawframe are slot-ted longitudinallyhorizontally, and in such slot on each side of the center saw F isinserted a sliding head-block, I, having an arm, 1, extending throughthe side of the saw-frame at the end, and through a 1ongitudinal slot,z, in the side piece 0. In this head-block I are mountedfriction-rollers z t, which bear against the back of the head D.

Through the head-block I is passed a bar, J, adjusted. and fastened atthe back by a bolt and nut, k, as shown in Fig. 6. At the inner end ofsaid bar J is pivoted a clip, m, by a vertical joint, and in thecorresponding clips in the two opposite head-blocks are secured the endsof the side saws F.

The arm I of each head-block I passes outward through a slide, L, placedin a longitudinally-slotted guide or guide-bar, 0, outside of the sidebar (3. The guide 0 is hinged at one end to an arm, P, projecting fromthe side bar 0, and the other end adjusted out and in by means of aset-screw, R.

The side saws F F can be adjusted at any distance from the center saw F,and parallel therewith, or at any angle desired, by moving thehead-blocks out or in and fastening the bars I in the slides L by meansof pins n, passed through any one of a series of perforations in thebar.

If the guides O are adjusted parallel with the side bars 0, the movementof the side saws is entirely with the saw-frame; but when the guides areadjusted at any angle with the side bars, said side bars obtain also alateral motion in addition to, and caused by, their reciprocatingmovement.

The angle motion of the side saws is of great importance in many kindsof work.

Having thus fully described our invention, what we claim as new, anddesire to secure by Letters Patent, is-

1. The head biock Lwith rollersi i, and adhave hereunto set our handsthis 11th day of justable bar J, with the saw F secured there- March, A.I). 1878. to, as herein set forth.

2. The combination of the head-block Iwith perforated arm I, slide L,slotted and hinged guide 0, and adjusting-screw R, for the purposesherein set forth.

In testimony thatwe claim the foregoingwe GEORGE JENNINGS. JOHN L.ROBELLAZ.

Witnesses:

A. SOURDRY, WILLIAM H. FALEY.

